“A large volume of carbon dioxide that was being used as theatrical fogging effects filled the venue…a total of 22 people received medical attention at the scene. Six were taken to the hospital, all in good to fair condition,” said Humphrey.

Symptoms ranged from headaches to dizziness to skin burns that resembled minor frostbite.

Those taken to hospitals ranged in age from 6 to 20, according to the fire department.

Many of the young people at the show were in town for Sunday’s Teen Choice Awards at the Gibson Amphitheatre in Universal City.